Virgilant Technologies Ltd.

Any device whose MAC address begins with 30:78:D3 has a network interface built by Virgilant Technologies Ltd.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

30:78:D3

Organization

Virgilant Technologies Ltd.

Address

2F., No.3, Aly. 19, Lane 8, Tianmu E. Rd.,Shilin Dist., Taipei City Taiwan TW 11153

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.